I have a new monitor with HDMI port and D-Sub.
I use HDMI port for displaying and I found problems of displaying. I found that the connection between HDMI head and the CPU HDMI port are oxidized because I never use it for 5 years. HDMI socket is much clearer for displaying. My HDMI cable head is also not well-condition.

How do I solve it?

Thank you very much

This post has been edited by kongming: Jun 26 2016, 02:48 PM

Find some anti-corrosion spray, but make sure it's safe to use on the electronic contact first laa

I think I should need advice from technician.
My monitor display problem is suddenly power off and I have to turn on the power button again.

BTW, many thanks.